Marius marches on Rome with L. Cornelius Cinna, and after a short battle,
he occupied Rome. Marius and Cinna are made joint consuls. Proscriptions
against Sulla's supporters. This ceased when Marius died of a third and
fatal stroke in 86, during his seventh consulship

Julius Caesar is forced to divorce his wife by Sulla, but he refuses and
flees to Asia and joins in the campaign against Mithridates.

80 BC

The start of the Sertorian War under Q. Sertorius in Spain, one of the
remaining Marian generals.

80 BC

G. Julius Caesar goes with an army under L. Licinius Lucullus to suppress
a revolt at the city of Mitylene on the island of Lesbos. He is awarded
the corona civica (oak crown) for saving a cohort from destruction.

80 BC

M. Tullius Cicero has his first major case defending Sex. Roscius against
the proscriptions of Sulla. He wins, and publishes the trial as Pro Sextius
Roscius Amerino.

79 BC

The city of Nola surrenders during the Italian War and the city is razed
to the ground.

Defeat of Roman Army at the Battle of Carrhae against the Parthians
under the Triumvir M. Licinius Crassus, who is killed in the battle.

52 BC

T. Labienus defeats an army of Gauls under the command of Camulogenus
near the site of Lutetia.

52 BC

Caesar builds two sets of fortifications 42 miles and lays Siege to Alesia. With approximately 42,000 men, Caesar besieges 100,000 Gauls within the fort and holds out 250,000 men in a relief force on the outside.

52 BC

The provinces of Belgica, Aquitania and Lugdunesis are created.

52 BC

Gn. Pompeius Magnus is elected as consul without a colleague in an attempt
to prevent him from assuming the dictatorship.

51 BC

The Parthians invade the province of Syria after the defeat of Crassus.

Caesar reforms the Roman calendar via Egyptian astrologists. Aside from the later Gregorian adjustments, the months and number of days virtually coincides with
today's calendar. The Julian calendar is introduced to Rome, and the month
of Caesar's birthday, Quinctillis, is renamed as Julius (July).

Caesar decided to use a solar measure of time that became known as the Julian calendar. This Julian calendar is the basis of the modern calendar. He also changed the name of the month Quintilis to Julius (July), after himself.